I load 45 ACP on a 550. No where near as much as you guys. I have picked up some things that have kept me out of trouble. One basic for me is to use Dillon sizing dies If using a Dillon powder measure. I did have some minor sticking problems related to the powder funnel/expander. I found out the Dillon had an improved 45 ACP funnel that is shorter. Problems with sticking went away. Mating sizing die and new powder funnel ended problems.
Finally, I use an elderly C&H taper crimp die. I like these dies because of ease of adjustment.. I use 200gr. RCBS personally cast lead SWC bullet. Feeds good and is extremely accurate. These rounds were used mostly for informal Bullseye matches. These loads run flawlessly through my stock as a door knob Colt made old style Combat-Target 1911-the low end model.